Bascule-bridge.



A. H. SGHERZER.

BASUULE BRIDGE.

APPLICATION FILED IAN. 2s, 1911.

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A. H. SGHERZBR BA'SOULB BRIDGE, APPLICATION FILED JAN. 23, 1911.

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ak/Wma@ A. H. SGHERZER. BASGULE BRIDGE.

APPLICATION FILED JAN. 23,1911.

Patented sept.'8,1914.

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A. H. SCHERZB-R.

- BASCULE BRIDGE. A PPLIQATION FILED JAN.23.A1911.

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Specification of Letters atent.

llatentedtept. 8, 1914..

Application filed Eanuary 23, 19H. Serial No. 604,015.v I

`To all' whom it may contem- 'Beit known that I, ALBERT SCHERZER, a citizen ofthe United States, anda resident ofChica'gd iii-the county of Cook and State of Illinois, have invented certain newlfand -useful lmprovements in Bascule-Brid-ges; -and I 4do hereby declare that the following is a full, clear, and exact description thereof, vreferencebeing had to the accompanying drawings, and to the characters of reference marked.' thereon, which form a part of this specification.

This' invention relates tovimprovements in 'bascule or lift bridges of that kind'wherein the bridge is opened and closed bythe swingclosed -by motor or hand power, and to an span.

improved brakel mechanism by which to control the opening andclosing movements of the leaf.

As shown in the drawings, Figure 1 is a side 'eleva-tion of the shore end of the bridge y leaf and its supporting piers and approach. Fig. 2 is a sideclevation `of one of the trusses of the leaf, its supporting segment and counterweight. Fig. 3 is an end view of the bridge with parts omitted. Fig. 4 .is a sectional detail of the curved bearing member of the supporting segment. Fig. 5 is a side elevation of a form of the track on which the rolling segment rolls. Fig. 6 is a section on line 6 6 of Fig. 2,. Fig. 7 'is a side elevation of ,a deck bridge equipped with my improved supporting segment'. Fig. 8 is a cro-ss section of the bridge leaf, showing the operating mechanism for opening and closing the bridge. Fig. 9 isa horizontal section on the line 9 9 of Fig. 8. Fig. 10 is a detail-section on the line 10-10 ofFig. 8. Fig. 11 is a vertical section on the line 11.-- 11 of Fig. 8, showing a detail of the brake mechanism. Fig. 12 is a vertical section on line l1.2- 712 of Fig. 8, showing another detail of the brakeinechanism.

As shown in the drawings, 10, 10 designatethe shore piers for the bridge leaf or 11 designates the bridge approach supported on said piers.

l2 designates asafwhole the movable leaf of the bridge. i

is of that kind known as a through bridge, 1t embracing two lateral trusses and a bridge 4.floor 13 'supported adjacent to the lower chords 14 of the trusses. rfhe inner or shore end of the bridge leaf is provided with rolling segments 15,15 which are attached rigidly toand formparts of the trusses of the roll on horizontal supporting girders 16-16 supported onthepiers 10, 10.

Each'of the supporting segments 15 is made of a singlet or integral cast or pressed steel piece, and comprises a curved bearing member 17 which rests and rolls on the supporting girders 16 and a sector shapedbody or web 17 which isfthickened and flanged yat its inner side to constitute the strut or compression member 18y of the supporting segment. The said sector shaped body is formed at its upper side with oppositely eX- tending horizontal flanges 19-19 which conment is attached tothe truss structure. The

ber 17 of the supporting segment to stiifen the body and connect the bearing member with the attaching flanges 192 The sector shaped web or body portion of the supporting segment ,is cored out, as indicated at 21 to lighten the same. The vertical strut member-18 of the segment is placed in the truss inv verticalgalinement with the strut member 22 of the truss, and is attached to thev lower end of said' strut member 2,2 by any suitable rigid fastening means. The lower chord '14 and the oblique brace member 24 of the truss are rigidly fastened to each other and to the foot of the thickened or strut member of the one piece supporting segment by any suitable attaching means. The attaching anges 19 of the upper side of the supporting segment are fastened by bolts 25 to a horizontal girder 26 which constitutespart of the truss, and which is attached at its forward end to the strut member 22 and extends rearwardly therefrom,

the upper chord27 ofthe truss by means ofthe oblique brace member 28. Supported movable leafand are adapted -to rest and' outer side ofthe web or sector shaped body i is thickened andfianged at 2O to constitutel a. continuation of the curved bearing mem.-V

frhe bridge musa-ated in Figs. i' and 2 located on either side of the approach 11 and sostitute means by which the supporting segand is braced from said strut member and end .of a vertically swinging lever 68 that `is pivoted at its lower :end 1t-69 to a horizontal member 79 lof the leaf structure.l The upper .end ofsaid lever is pivotelly connected .by the 71 to the crank arm 7 2 of a rock shaft73 .which is supported in bear-ings at its inner :end in a vertical-member l:75 of the bridge leaf structure and is supported at its youter end in the strut meinber 22. Said shaft extends at its outer end 4beyond said strut member 22 and is provided with a crank `arm 77 which is cony r; nected by a link 78 With a hand lever v79 that is pivoted to the .strut member -22 and is adapted to be locked in adjusted positions by means of `'a spring pressed, finger actuated paWl 80 which Works in` a notched sector 8l fixed to the adjacent strut member 22. yRigid With said rock shaft 73 and extend-J ing therefrom in a `direction opposite to the crank 77 is a'short .crank armv 82 to the outer end of which is connected aI brake setting spring 83. The lower end of said springnis attached to a bracket 84 fixed to the outer side of the adjacent strut member/ v22. The said lower end of the spring terminates in a screw/'threaded stem 85, and nuts 86 are yscrew-threaded to said stem and bear against said bracket and serve to adjust the tension of said spring. The said spring acts to hold the brake shoe up against the brake Wheel or drum, 4and .the pressure of the spring may be more or less relieved from .the brake shoe to vary the braking effect thereof on the .drum by-adjusting the lever 79 on' theladjusting sector 81.

It `will be understood that the structural details of the several features :0f the invenl tion are capable of considerable variation! .with-in vthe spirit and scope of the invention,

and may thus be varied to adapt the same! to `bridges of varying constructions.

l claim as my invention ,1-

l.V ln a rolling :lift bridge, a support provided with tracks, a swinging leaf having; at its heel end' segments which rest and roll on said tracks, racks carried by said support, pinions meshing With` said racks, operating shafts,rotatively'monnted i-n bearings cari ried by the leaf and movable with the se ments along said tracks, to which sha' s1 said pinions are fixed, a motor driven shaft extending across the leaf and geared to said operating shafts, a manually operablerotative shaft extending across the leaf and mounted in bearings carried by the sides of of racks carried by said support at the sides .of-the leaf, pinions meshing With said racks, operatingshafts rotatively mounted in bearings carried by the sides of said leaf to which said pinions are fixed, a motor driven lshaft extending across the leaf and geared at its ends -tosaid pinion shafts and provided between .its ends WithtWo gear Wheels of different diameters, a manually operable rotative shaft also' extendingv across and movable with the leaf and having bearing in the sides of the leaf, with means to rotate the same, pinions slidable on said latter shaft between the ends thereof, with means to separately engage and lock them in mesh With said gear `Wheels of the motor driven shaft, and an -operators platform at the /side .of the leaf adjacent to and elongated inthe path of movement of the rotating means for the operating shaft.

3. The combination With the movable leaf of a bascule bridge, and a support therefor, of racks carried by said support at the sides .ofthe leaf, separate, tubular operating shafts rotatively mounted .in hearings carried by `the `sides of the leaf, pinions fixed to said A shafts and meshing4 With and movable along said racks, a hand operated shaft extending across lthe leaf and rotatively mounted in Said tubular operating shafts and provided at its ends With hand cranks, means for gearing said shaft to both of the operating shafts, and a. platform carried by said support and extending in the direction of the line of travel of said hand crank.

4. The combination With the movable leaf of a bascule bridge and a support therefor, of a rack carried by said support, a tubular .operating shaft rotativelymounted in and movable With said leaf, a pinion fixed to said shaft and meshing With said rack, a second shaft rotatively mounted in said tubular shaft, Iand gearing between said second shaft and tubular shaft, With motor driven and hand actuable means to separately rotate Asaid tubular operating shaft through said gearing.

The combination With the movable leaf of a bascule bridge and'means for supporting the same, ofa riXed strut provided With a rack, a manually operable shahft provided with a hand crank, a tubular operating shaft in which the manual shaft is` rotatively mounted, a pinion fixed to the operating shaft and engaging said rack.l a motor shaft geared to said operating shaft, a pinion on the manually rotative shaft, and a. gear Wheel fixed to the motor shaft With which said latter pinion meshes. 4

6. The combination With the movable leaf of a bascule bridge and means for supporting the same, of a Xed strut provided with a rack, a manually operable shaft provided with a hand crank, a' tubular operating shaft .of v,a bascule bridge, and a support therefor,

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in which the manual shaft is rotatively mounted, a pinion fixed to the operating shaft and engaging said rack. a motor shaft geared to said operating shaft, a gear Wheel fixed to the motor shaft, and a. pinion mounted on the manual' shaft lfor meshing engagementwith said gear Wheel and having means for disconnecting it from said gear Wheel'.

7. The combination with the movable leaf of a bascule-bridge and a support therefor, of racks carried by the support at the sides of the leai tubular operating shafts rotatively mounted in bearings carried by the sides of .said leaf, pinions on said shafts which mesh WithV and are movable along said racks, a motor driven shaft geared at its ends to said tubular operating shafts, a manually operable shaft rotatively mounted in said tubular shafts and geared to said motor driven shaft and operating through the latter to rotate said operating shafts and a fixed platform arranged parallel tosaid racks adjacent the ends. of the said manuallyv operable shaft. l

8.v The combination with the movable leafz of a bascule bridge and a support therefor, of racks carried by the support at the sides of the leaf, tubular operating shafts rotatively mounted in bearings carried by the sides of1 said leaf,'pinions on said shaft which meshi with and are movable along said racks, a m0-A tor driven shaft extending across said leaf and geared at its ends to said operating shafts,; a manually operable shaft also extending: across the leaf and rotatively mounted in said operating shafts, change speed gearing between the manually operable shaft and the motor driven shaft arranged to vary the hand driven speed of the gears, a hand crank fixed to the manually operable shaft, and a plat-form parallel with said racks car- ,riedby the support adjacent to said hand shaft provided With a brake drum, an adjustable spring pressed brake member engagingsaid shoe, operating to maintain a normally constant pressure of the shoe against saidv drum and operating means for said brake member extending laterally to the side of the bridge and there provided with means for adjusting the pressure of said spring against said shoe.

10. The combination With the swinging leaf of a bascule bridge, a fixed support therefor, and racks carried by said support at the sides of the leaf, of operating shafts rotatively mounted in the leaf, pinions fixed to said operating shafts and meshing With said racks, a motor driven shaft extending across and rotatively mounted in said leaf and geared at its ends to said operating shafts, a manually operable shaft rotatively mounted in said leaf and geared to said motor driven shaft whereby the bridge leaf may be manually controlled through said motor driven and said operating shafts, and a bra-ke mechanism applied to said manually operable shaft and acting with a normally constant pressure thereon to control the swinging movment of the leaf.

11. The combination With the swinging leaf of a bascule bridge, its support and operating mechanism for opening and closing .the bridge embracing a rotative shaft extending transverselg(T across the bridge with means to operate the same, of a brake mechanism embracing a drum carried by an intermediate part of said shaft, a brake shoe engaging said drum, and spring pressed means acting to normally press the shoe with a constant pressure against said drum, with means to vary the tension of said spring. 

